# WMR300

Running the WMR300 driver under this one, configured by hand.

Generated by `tools/build_drivers.py` from the driver as installed on the machine that
ran it. Do not edit by hand.

> **There is a web interface for all of this.** It is on by default, and the driver
> prints its address when WeeWX starts:
>
> ```
> INFO user.ultimatepush.driver: The web interface is at
> http://1.2.3.4:8080/?token=abcdefg12345
> ```
>
> Everything on this page can be done there instead, and one thing is much easier:
> deciding which reading goes into which database column. See
> [Web interface](Web-interface).

## What it is

Driver for Oregon Scientific WMR300 weather stations. Sensor data transmission
frequencies:

## The smallest configuration that works

```ini
[Station]
    station_type = UltimatePush

[UltimatePush]
    driver = user.ultimatepush.driver

    [[hardware]]
        station_types = WMR300

        [[[WMR300]]]
            role = main

[WMR300]
    driver = weewx.drivers.wmr300
```

The `[WMR300]` section belongs to that driver and is read by it, exactly as it would be
if it were the only driver WeeWX ran, so `weectl device` keeps working on it. What goes
under `[[hardware]]` belongs to this one: see [Hosted hardware](Hosted-hardware).

## Finding it

There is nothing to look up. The driver searches the USB bus for the device itself.

If it does not find it, the usual cause is permissions: WeeWX runs as the `weewx`
user, and a raw USB device belongs to root until a udev rule says otherwise. WeeWX
installs those rules for the hardware it supports. Check with:

```bash
lsusb
```

and look for the console in the list. If it is there and the driver still cannot open
it, the log says so with the vendor and product number, which is what a udev rule
needs.

## Every option

Straight out of `weewx.drivers.wmr300`, with what its author wrote above each one.

#### model

The station model, e.g., WMR300A

Default is `WMR300`.

#### driver

The driver to use:

Default is `weewx.drivers.wmr300`.

#### history_limit

The console history buffer will be emptied each
time it gets to this percent full
Allowed range 5 to 95.

Default is `10`.

## More than one station

This driver is one station among however many others. Which of them fills `outTemp`, and
where the rest of their readings go, is in [Several stations](Several-stations).